yardjockey
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- Nov 21, 2008
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Hi Folks! -- My first post. Here's what I got... Weil-McLain cast iron, oil fired, hot water radiators, hot water coil, about 12 years old. Replaced aquastat this morning because the circulator pump relay was shot. I set the HI/LO to 180/160 with offset at 15, just like the other one. Till then, when calling for heat, the water temp would rise to 190-ish, shut the burner off till the circ pump pulled the temp down to 175 or so and cycle the burner on again. This process would repeat with the burner on for about two minutes and off for about 20 seconds until the thermostat was satisfied.
With the new aquastat, water temp wanders between 155 and 170 with the circ pump on and the burner never shuts off. Once room temp is OK, pump and burner shut off immediately and residual heat rises the water temp to 190. Using hot water cylces the burner as usual. The radiator temps are about 10 degrees lower than before, understandably.
Is this related to the aquastat?
Me-thinks it's a new issue. I got a glimpse at the flame, and it was nice and bright yellow as before, but seemed a little ragged. Would a new nozzle (same size) help? This one's about 4-mos old.
Any help/advice will be appreciated. Thanks --- EdP
With the new aquastat, water temp wanders between 155 and 170 with the circ pump on and the burner never shuts off. Once room temp is OK, pump and burner shut off immediately and residual heat rises the water temp to 190. Using hot water cylces the burner as usual. The radiator temps are about 10 degrees lower than before, understandably.
Is this related to the aquastat?
Me-thinks it's a new issue. I got a glimpse at the flame, and it was nice and bright yellow as before, but seemed a little ragged. Would a new nozzle (same size) help? This one's about 4-mos old.
Any help/advice will be appreciated. Thanks --- EdP